Ignition cut-out for internal-combustion motors



G. A. GILLEN Feb. 4, "1930.

IGNITION CUT-OUT FOR INTERNAL COMBUSTION MOTORS Filed March 20, 1924 2Sheets-Sheet l BATTERY INVENTOR G eorge A. G illen BY 1,4,4 v I ATTORNEYFeb. 4, 1930. GILLEN 1,745,754

IGNITION CUT-OUT FOR INTERNAL COMBUSTION MOTORS Filed March 20. 1924 2Sheets-Sheet 2 way 1 W i m E, 27

. INVENTOR George A Gillan a 1,4, I v

- ATTORNEY Patented Feb. 4, 1930 UNITED STATES PATENT OFFICE GEORGE A.GILLEN, OF JERSEY CITY, NEW JERSEY, ASSIGNOB, BY MESNE ASSIGN- MENTS, TOGILLEN, KIMMEY, BAKER SYNDICATE INCL, OF NEW YORK, N. Y., A DO- MESTICCORPORATION IGNITION GUT-OUT FOR INTERNAL-COMBUSTION MOTORS Applicationfiled March 20, 1924. Serial No. 700,579.

This invention relates to improvements in ignition cut outs for internalcombustion motors, and its object is to provide an ignition cut outarranged to be used in connection with a transmission lock such as isillustrated and described in my Patent Number 1,448,737 issued on the20th day of March, 1923.

Another object of the invention resides in the provision of a devicewhich may be readily installed in the ignition circuit of a motorwithout in any manner changing the construction or the arrangement ofelements associated therewith and which will at the same time renderoperation of the motor wholly impossible until the lock is released.

lVith the above and other objects in view which will become moreapparent as the description proceeds, the invention consists in thenovel construction, combination and arrangement of parts which will befully set forth in the following specification, claimed and illustratedin the accompanying drawing, in which,

Figure 1, is a perspective view in diagram of a coil box and coilsshowing my improved cut out in place,

Figure 2, is an edge view of the cut out,

Figure 3, is a perspective view of the transmission lock cover plate,showing the entrance of the cut out cable thereinto,

Figure 4, is a vertical sectional view through the lock cover plateshowing my cut out switch adapted thereto,

Figure 5, is a sectional view taken on line 5 of Figure 4, and

Figure 6, is a perspective view of my cut out block.

Referring to the drawings in detail, the numeral designates the coilboxes used in the usual Ford ignition system, each of which is providedon its under side with a contact which normally rests upon and inelectrical contact with the spring tongues 11 of a bus bar 12. Aconductor 13 leads from the strip or bus bar 12 to the ignition switch14, one contact of which is connected to the strip 15, while the othercontact is connected to the strip 16. These strips extend around thecoils as shown and terminate in the posts 17 and 18 respectively whichin turn have connected thereto the magneto and battery leadsrespectively. lVhile there may be slight variations from the descriptionabove, it-is generally descriptive of ordinary ignition circuits such asused on the Ford motor and forms no part of this invention.

In order to provide an effective cut out of the ignition circuit abovedescribed, I provide a cut out unit designated generically by thenumeral 19 which comprises a pair of strips of conducting material 20and 21 which are held in spaced parallel relation by a suit abledielectric such as hard rubber or fibre 22.

This cutout is inserted between the spring tongues 11 and the contactson the bottoms of the coil boxes as shown in Figure 1, and when in suchposition, it will be obvious that no current will pass into the coilboxes from the strip or bus bar 12.

In order that the strips 20 and 21 may be brought into electricalconnection to establish the ignition circuit, a pair of connectors 23and 24 are provided, each of which is connected to its respective strip,and secured to said connectors are the conductors 25 and 26 which arehoused within an armored cable 27 leading into the transmission coverplate 28, illustrated in Figure 3.

As shown the plate 28 is provided with a tubular standard 29 havingmounted therein a sliding plunger 30 for operating the transmissionlocking means (not shown). This plunger is provided at its upper endwith a pintumbler locking cylinder of any approved design, and isnormally urged upwardly under the influence of a compression coilspring.

Secured in the plunger 30 intermediate its ends is a block 31 of fibreor other suitable insulating material which when the plunger isdepressed into its locked position is in position to engage the contactsprings 32 in order to interrupt any current flowing therebetween. Thecontact springs 32 above referred to are carried upon an insulatingblock 33 which is mounted in a chamber in the lower end of the column 29and the springs 32 are connected to the ends of the conductors 25 and26. The insulating block 31 carries a contact plate 80, in position toengage contact springs 32 when the plunger is in its upper position.

In operation when the plunger is in raised 5 or unlocked position, itwill be seen that electrical communication is established between thesprings 32, so that the current entering the bus bar 12 through eitherof the posts 17 or 18 will enter the plate 21 andflow'through theconductor 26 into its respective contact spring 32, thence through theplate 30 into the opposite contact spring 32 from which it will becarried through the conductor 25 to the plate 20 from which it entersthe coil boxes. When the plunger is in depressed or locked position, itwillbe seen that the insulating block 31 will be in position to engagethe springs 32, and the circuit for the current will then beinterrupted.

WVhile in the foregoing there has been shown and described the preferredembodiment of this invention, it is to be understood that minor changesin the details of construction, combination and arrangement of parts maybe resorted to without departing from'the spirit and scopeof theinventionas claimed. 7

What is claimed is Ina device of the character described, the

combination with ignition coils having contacts and a bus bar positionedfor engagement by said coil contacts, of'a cut-out interposed betweensaid bus bar and the coil contacts and comprising conducting stripsseparated 35 by insulation and connecting means by 'which saidconducting strips may be electrically connected to thereby establishelectrical connection between the coil contacts and the bus bar.

40 Signed at New Y0rk,'in the county and State of New York, this 17thday'of March,

GEORGE A. GILLEN.

